MAH is the acronym for Marketing Authorisation Holder. A Marketing Authorisation Holder is a legal entity that has applied and received the right to market and sell a product in a pharmaceutical form or a set of pharmaceutical forms. Whether for human or veterinary use, a medicinal product must be the subject of a valid Marketing Authorisation (MA) before it can be placed on the market for sale and supply.
The Marketing Authorisation Holder (MAH) has to market the product in compliance with the terms of the authorisation. Marketing Authorisations issued only allow the product in question to be marketed by the MAH in that EU Member State, unless the product has been authorised via the centralised procedure in which case a single MA (National authorisation procedure) is granted by the European Commission and is considered valid in all EU Member States.